Water-purifier.



H. G. DITTBENNBR. WATER PURIFIER. APPLICATION FILED JUNE 6,1908.

Patented Apr. 13, 1909.

2 SHEETS-SHEET 1.

H. G. DITTB-ENNER.

WATER. PURIFIER.

APPLIOATION FILED JUNE s, 190s.

specification of Letters ratentf Patented April 1s', i909.

, Application filed June 1908. Serial No. 437,113.

To altwhom it may concern:

' y Be .it\known .that LHERMANN G. Dirrvlm lsurnlsa a citizen .of the United States, residing at Minnea olis, inthe .countyof Hennepin andnState` o Minnesota, have invented certain .new and useful Improvements in Water-Puriiiers and-'I do hereby declare the following to bea full,'clear, and exact description of the invention, such. as Willenable others skilled in the art to which it appertains to make and vuse theA same;

My invention has for its especial object to vprovide an improved hotwater 'purifier with Referring to .the drawings, which illustrate the improved device in what at present is beheved "to beits preferred form, Figure 1 1s a view, chieiiy in l vertical section, taken through the de vice on the line x1 x of Fig. 2,

some parts being left in full. Fig. 2 1s a transverse section taken on `the irregular line x2 x2 .of-'Fig l; and Fig. 3 is a transverse ver.- tical section taken on the line x3 :t3 of Fig. 1. The body or external portion ofthe device is in the form of a cylindrical or tubular metal shell 1 having closedends, one of which ends is closed by a detachable Ascrew-threaded head 2, `and the other head of which is rtapped by va couplin- 3,`the particular construction of .which endsthe shell 1 is Vprovided Withcoupling sleeves 4 and 5 that o ven tangentially-into the interior of said she andthe former of which may bea'ssumed to be connected to and to receive hot water from'the coil of a furnace or water back, of a stove, while the latter may be assumed to be connected to an ordinary hot water tank, which tank should be connected to the hot water coil orhot'water back for ,the return of the relatively cold vvfatertlicreto'. .Utherwise stated, this shell A1 is connected in the hot Water delivery pipe that extend? frein a hot .water coil or .Water hack .to ahct' mata-tank, .er hot-ma.-

-terwtig enceintes." The importance 'et be noted later on. "Near its the tangential arrangements of the coupling sleeves 4 and 5 will be considered later on. Near one end the shell 1 -is further provided with a third `coupling sleeve 6 that-will usually be connected to the kitchen and bathroom hot water faucets. lThe numeral 7 indicates a hot Water thermometer of standard construction, which is screwed into a sleeve 8 of the shell 1.

Located 'within the shell 1 and screwed into and rigidly supported b the cou ling 3 is a sleve 9 that 1s externa y threa ed at both en s.

Located concentric to and Within the shell l is a hollow spool 10 having enlarged hollow heads 11, both of Which heads are formed with hubs, one of which is 'screwed onto the threaded inner end oi the sleeve l9, and the other of which has a threaded axial perforation that is closed by an adjustable plug 12. Preferably this spool 10 is made of aluminum. A small tube 13, vpreferably of iron, is screwed, at one end, into the adjustable plug 12 and extends axially through the entire yspool 10 and its headsll and entirely through the fixed supporting sleeve 9 which latter, it will be here noted, supports the entire spool and parts carried thereby. The contracted body portion oi the s ool 10 is provided with azmultipli'city of ra 'ial erforations 14, through whlch water mayreely ass. A very great portion of thesmall tu' e 13 is closed by a long vwooden plug or rod 15, but beyond the inner end lof said plug said tube is provided With a multiplicit of radial perfof rations '16' that' are rei'erav l ,covered by a -body of mineral Woo 'or 's' ar materlall.

Immediately surrounding the contracted bodyportion of the spool 10 and extendin between the heads 11 thereof, isa cylindrica layeroi mineral wool 18 that is completely surrounded by a cylindrical'cover 19- oi asbestos aper, which. latter is held in place a helica'ly wound copper wire 20 that preferably tinned. Immediately surrounding the wrap er 19 and coiled Wire 20 is a cylindrical bo y lof charcoal 21" that is contained within a cylindrical wrapper 22 oi asbestos paper held in place by a coiled copper wire 23, .that isalso preferably tinned. heavy cylindrical bodyl of lasbestos `wool 24 sur.-

`rounds the wra per 22 coiled wire 23, and

this is mmm@ with@ a 'retulte retainingcylinder and strainer 25, preferably in the form of a tinned copper wire netting of very fine mesh. e

The above is a preferred arrangement of concentric straining media but this arrangement, of course, may be varied, especially in respect to the substitution of the materlals. i

he small tube 13 is capable of slight end. wise ysliding movement through the xed sleeve 9, and a water tight joint is formed between the said arts, by means of a stufling box 26. A sma valve 27, made up of a stem .and a head normally closes the outer end of the said tube 13, the stem of said valve being of considerably less diameter than the interior bore of said tube. The head of said valve is normally engaged and held in a clo'sed position by an adjustable abutment in the forml of a lonO set screw 28 that werks through and has threaded engagement .with the coupling 3 and is axially alined with the tube 13 and valve 27. A stufiing box 29 affords a Water tight joint between the set screw 28 and the coupling 3. A hot watery delivery pipe 30 extends upward from the coupling 3, and a water tight joint is formed between the said arts by a stufiing box 3l. The outer end of t e tube 13 and its valve 27 are located within a recess 32 of the coupling 3, and this recess is connected to the water delivery pi e 30 by a small ort 33 that is l 1n view of the fact that the heads 11 of said spool will increase its longitudinal expansion, and since the said tube 13 is anchored b the plug 12 to the free headof the said spoo it is evident that whenthe said spool and tube are both subjected to hot water of some certain temperature, the outer end of the tube 13 will be moved away from the valve abutment or set screw 28 so as to permit the valve 27 to open up the outer'end ofthe said tube 13 and ermit an outward flow of hot water upwar throu h the port 33 and 4water delivery pipe 30.l T e temperature at which this openin of the valve 27 will occurmaybe varied b a j ustments of the abutment screw 28 oro the plug 12. Usually this adjustment will be such that the valve 27 will open pnly when the temperature of the water is above 212 degrees, which is the boiling point 'of water at atmospheric pressure.' The said valve being thus set, a dischar e of sterilized water throu h the pipe 3() wi occur whenever and only when the temperature of the water is above 2 12 degrees, which insures through .the

sterilization. This dischar e of sterilized Water is, therefore, complete y automatic.

Therewill, of course, be a continuous circulation of water through the s ell 1 under 4 and 5 are. such that the water, in passing from the former to the latter, will circulate helically in the cylindrical space between the shell 1 and the screen 25, and this insures a motion ofthe water in all ortions ofthe said shell and thus prevents t e accumulation of sediment.

Regardless of the temperature of the.

water, water for ordinary uses may be drawn olf through the sleeve by opening of hot water faucets in 'the kitchen, bathroom,- or

elsewhere. Sterilized water which passes from the shell 1 to the delivery pipe 30 must irst pass through the screen 25, thence v'through the. outer layer of mineral wool 24,

thence through the outer asbestos paper wrapper 22, thence through the body of charcoal'21', thence through the inner asbestos wrapper 19,l thence through the perforations 24 1n the spool 10, thence through said spool and through the asbestos body 17 and perforations 16 into the small .tube 13, and from the latter through the chamber 32 and port 33 of the coupling 3 into the-said water delivery pipe 30. In thus passing through the several'concentric straining or liltering media, the water will be thoroughly purified, that is, all solid foreign. materials will be removed from the water. In fact, nearly all of these impurities will be lodged on the outer surface of the outer layer of mineral wool 24, and all large particles 'will be stopped by the screen 25 before they reach the said layer 24,

and hence will be ultimately carried oil' eneral service connection or sleeve 6, or wi be 'deposited in the hot water tank. The opening in the end of the shell 1 which is normally closed by the cap or head 2 is large enough to permit the spool 10-11 to be inserted intov said shell or removed therefrom. As shown in Fig. 1, the head 0f the valve 27 is slit so that by the a plication thereto of ascrew-driver it may e rotated for the urpose of grinding it onto the seat aordedp by the end of thesleeve 13.

vThe strainer or filtering device is, of course, capable of use independently of the 4automatic valve mechanism for regulating the low therethrough; andit may, 0f course, be thus used either for cold or w`arm water. Furthermore, the device is capable of being used for controlling he ilow of steam or the flow of water condensed from :2; determined temperature is afforded, sub- 5 deviceto the exterior of said shell.

steam. Infact, whether or not the moisture will be in the form of water or steam will del pend on the pressure under which it is confined and the temperature at which the automatic valve is set to be opened and closed.

It hat I claim is:

l. In a Water purifier the combination with a shell having tangential inlet and outj. let passages located one at each end thereof, and so extended as to cooperate to produce l helical motion of the water in the same direction, of a straining device extended axially within said shell and a pure Water outlet tube extending from the interior of said straining 2. In' a water purifier, the combination with a cylindrical shell having an inlet passage opening tangentially into one end portion thereof, and an outlet passage opening tangentially outward from the other end portion thereof, of a straining device Within said shell made up of a perforated hollow metal lspool and concentric layers of straining media surrounding the same, and a pure water outlet tube extending from the mterior of said spool axially outward through the same and through said shell, substantially as described.

3. In a device of the kind described, the combination with a shell having suitable inlet and outlet passages for the circulation of het Water, of a straining device within said shell, a pure water outlet tube extending from the interior of said straining device to the exterior of said shell, a valve for control-v ling the flow of water through said outlet l tube, and thermally actuated means for i opening and closing said valve, whereby the l automatic control of purified water at prestantially vas described.

4. In a device of the kind described, the combination with a shell having suitable ini let and outlet passages for the circulation of hot water, of a perforated metal spool located within said shell and anchored thereto at one a end, filtering media surrounding the perforation portion of said spool, a pure water outi: letJ tube with one end extendmg axially out- Ward through the anchored end of said spool,

and with its other end anchored to the free end of said spool, a valve for closing the outer end of said pure Water tube, an abutment holding said valve closed when the water is below a predetermined temperature, and the said metallic. spool serving, by endwise expansion, to open said valve, when the water is above a predetermined temperature, substantially as described.

5. In a device of the kind described, the combination with a shell having suitable inlet and outlet passages for the circulation of hot water, of a hollow metallic spool having enlarged hollow ends 0r heads and having perforations in its contracted body portion, the said spool being located within said'shell and anchored thereto at one end, filtering media surrounding the perforated body portion of said spool, a pure water outlet tube with one end extended axially outward through the anchored head of said spool and w1th its other end anchored to the free end of said spool, a valve for opening and closing the outer end of said pure Water tube, and an adjustable abutment holding said valve' closed when the water is below a predetermined temperature, and the said metallic spool serving, by expansion, to open said valve when the water is above a predetermined temperature, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HERMANN G. DITTBENNER Witnesses:

HARRY l). KILGORE, MALIE HOEL. 

